package com.sky.service.impl;

import com.github.pagehelper.Page;
import com.github.pagehelper.PageHelper;
import com.sky.constant.MessageConstant;
import com.sky.constant.StatusConstant;
import com.sky.context.BaseContext;
import com.sky.dto.CategoryDTO;
import com.sky.dto.CategoryPageQueryDTO;
import com.sky.entity.Category;
import com.sky.exception.DeletionNotAllowedException;
import com.sky.mapper.CategoryMapper;
import com.sky.mapper.DishMapper;
import com.sky.mapper.SetmealMapper;
import com.sky.result.PageResult;
import com.sky.service.CategoryService;
import io.swagger.models.auth.In;
import org.springframework.beans.BeanUtils;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.time.LocalDateTime;
import java.util.List;

@Service
public class CategoryServiceImpl implements CategoryService {
    @Autowired
    private CategoryMapper categoryMapper;

    @Autowired
    private DishMapper dishMapper;

    @Autowired
    private SetmealMapper setmealMapper;
    /**
     * 分类分页查询
     *
     * @param categoryPageQueryDTO
     * @return
     */
    @Override
    public PageResult page(CategoryPageQueryDTO categoryPageQueryDTO) {
        PageHelper.startPage(categoryPageQueryDTO.getPage(), categoryPageQueryDTO.getPageSize());

        Page<Category> page = categoryMapper.page(categoryPageQueryDTO);

        return new PageResult(page.getTotal(), page.getResult());
    }

    /**
     * 新增分类
     *
     * @param categoryDTO
     */
    @Override
    public void insert(CategoryDTO categoryDTO) {
        Category category = Category.builder()
                .status(StatusConstant.DISABLE)
//                .createTime(LocalDateTime.now())
//                .updateTime(LocalDateTime.now())
//                .createUser(BaseContext.getCurrentId())
//                .updateUser(BaseContext.getCurrentId())
                .build();

        BeanUtils.copyProperties(categoryDTO, category);

        categoryMapper.insert(category);
    }

    /**
     * 启用禁用分类状态
     *
     * @param status
     * @param id
     */
    @Override
    public void startOrStop(Integer status, Long id) {
        Category category = Category.builder()
                .status(status)
                .id(id)
//                .updateUser(BaseContext.getCurrentId())
//                .updateTime(LocalDateTime.now())
                .build();
        categoryMapper.update(category);
    }

    /**
     * 根据id删除分类
     * @param id
     */
    @Override
    public void deleteById(Long id) {
        //查询当前分类是否关联了菜品，如果关联了就抛出业务异常
        Integer count = dishMapper.countByCategoryId(id);
        if (count>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_DISH);
        }
        //查询当前分类是否关联的套餐，如果关联了就抛出业务异常
        count = setmealMapper.countByCategoryId(id);
        if (count>0){
            throw new DeletionNotAllowedException(MessageConstant.CATEGORY_BE_RELATED_BY_SETMEAL);
        }
        categoryMapper.deleteById(id);
    }

    /**
     * 根据类型查询分类
     * @param type
     * @return
     */
    @Override
    public List<Category> list(Integer type) {
        return categoryMapper.list(type);
    }

    /**
     * 修改分类信息
     * @param categoryDTO
     */
    @Override
    public void update(CategoryDTO categoryDTO) {
        Category category = new Category();
        BeanUtils.copyProperties(categoryDTO,category);
//        Category.builder()
//                .updateTime(LocalDateTime.now())
//                .updateUser(BaseContext.getCurrentId())
//                .build();
        categoryMapper.update(category);
    }
}
